<!--签到题-->
<html>
    <title>key在哪里？</title>
    <head>
        <meta http-equiv="content-type" content="text/html;charset=utf-8">
        <a style="display:none">nctf{flag_admiaanaaaaaaaaaaa}</a>
    </head>
    <body>
    key在哪里？
    </body>
</html>
